Please only answer part B in the screenshots below I will mark brainliest

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.